CN112822915A

CN112822915A - Cooling fin and air cooling structure

Info

Publication number: CN112822915A
Application number: CN202011630923.7A
Authority: CN
Inventors: 胡玉新; 陈崇得; 孔进喜; 张力文
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-18

Abstract

The invention relates to the technical field of heat dissipation devices, in particular to a heat dissipation sheet and an air cooling structure. The heat sink includes: a base plate; the supporting ribs extend from the surface of the bottom plate to the direction far away from the bottom plate; the first assembly part and the second assembly part are suitable for being in clamping connection with the second assembly part or the first assembly part on the other adjacent cooling fin. The radiating fin provided by the invention can increase the radiating area, reduce the forced air cooling resistance and further increase the radiating capacity, and the radiating fin can be assembled in an end-to-end connection mode, so that an air cooling radiating channel is conveniently formed, and the processing difficulty of an integral radiator is reduced.

Description

Cooling fin and air cooling structure

Technical Field

The invention relates to the technical field of heat dissipation devices, in particular to a heat dissipation sheet and an air cooling structure.

Background

The pressure cooker is an indispensable cooking appliance for modern fast-paced life, generally has a fast cooking function, and improves the cooking temperature and shortens the cooking time by hermetically pressurizing food; however, after the pressure cooker finishes cooking, because the pressure in the cooker is higher than the atmospheric pressure, a user cannot open the cover of the cooker immediately, particularly soup, fluid or viscous foods, and because the cooker cannot be directly deflated to perform rapid cooling, long waiting time is needed for natural cooling, taking porridge as an example, the porridge cooking time is about 35 minutes, and the natural cooling time of the user on the pressure cooker is up to 25 minutes, the waiting time is long, and the user experience is poor. Therefore, the radiating area can be increased and the radiating efficiency can be improved by arranging the radiating fins on the pressure cooker; however, the conventional heat dissipation fins often adopt an integral structure, the processing technology is complex, the cost is high, and the integral heat dissipation fins are not suitable for improving the heat dissipation efficiency by reasonably setting the shape of the heat dissipation fins.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defects of complex processing technology and high cost of the radiating fin in the prior art, thereby providing the radiating fin which can reduce the processing difficulty and the production cost.

The invention aims to solve another technical problem of overcoming the defects of complex processing technology and high cost of the radiating fin in the prior art, thereby providing the air cooling structure capable of reducing the processing difficulty and the production cost.

In order to solve the above technical problem, the present invention provides a heat sink, including:

a base plate;

the supporting ribs extend from the surface of the bottom plate to the direction far away from the bottom plate;

the first assembly part and the second assembly part are suitable for being in clamping connection with the second assembly part or the first assembly part on the other adjacent cooling fin.

Optionally, the bottom plate extends towards the same side to form at least two support ribs.

Optionally, the two support ribs are respectively disposed at two side edges of the bottom plate along the width direction.

Optionally, the support rib is perpendicular to the bottom plate.

Optionally, the bottom plate is further formed with an assembly step, and the assembly step is suitable for being connected with the support rib on another adjacent cooling fin in an abutting mode.

Optionally, the first assembly part is arranged at the edge position of the support rib close to one side of the bottom plate and connected with the assembly step; the second assembly part is arranged at the edge position of one side of the support rib, which is far away from the bottom plate.

Optionally, an extension portion is further formed on the heat sink, and the extension portion is formed by extending at least a partial region of the support rib.

Optionally, the extension is arranged parallel to the base plate.

Optionally, at least one extending portion extends from each of the two opposite support ribs on the heat sink, and the extending portions on the two opposite support ribs extend in opposite directions.

Optionally, an included angle a is formed between the edge of the support rib far away from one side of the bottom plate and the bottom plate, wherein a is greater than 0 °.

Specifically, the included angle a is 3 °.

The air cooling structure provided by the invention comprises:

an air duct;

the fan is arranged at one end of the air duct; and

the radiating fin component is arranged at the other end of the air duct;

the heat sink assembly is communicated with the fan through the air duct;

the radiating fin component is formed by splicing the radiating fins.

Optionally, the heat sink assembly is formed by splicing at least two heat sinks, and a heat dissipation channel is formed between the two heat sinks.

The technical scheme of the invention has the following advantages:

1. the radiating fin provided by the invention can increase the radiating area, reduce the forced air cooling resistance and further increase the radiating capacity, and the radiating fin can be assembled in an end-to-end connection mode, so that an air cooling radiating channel is conveniently formed, and the processing difficulty of an integral radiator is reduced.

2. According to the radiating fin provided by the invention, the at least two supporting ribs are formed by extending the base plate towards the same side, so that the base plate can be separated through the supporting ribs when the two adjacent radiating fins are assembled, a radiating channel can be formed between the two adjacent base plates after the two adjacent radiating fins are assembled, ventilation is facilitated, a hollow state is integrally formed, and the contact area between cold air and the radiating fins is increased.

3. According to the radiating fin provided by the invention, the two supporting ribs are respectively arranged at the edge positions of the two sides of the bottom plate along the width direction, so that after the radiating fins are assembled, the supporting ribs are connected to form a plane state, the radiating fin is convenient to contact with an external object to be radiated, the using mode of the radiating fin is increased, and the bottom plate does not need to be contacted with the external object to be radiated.

4. According to the radiating fin provided by the invention, the assembling step is arranged on the bottom plate and is suitable for being connected with the supporting rib on the other radiating fin which is adjacently arranged in an abutting mode, so that the adjacent radiating fins are ensured to be firmly connected, the rebound phenomenon after metal materials are punched and formed can be reduced, the supporting ribs which are adjacently arranged are positioned on the same plane, the close fitting degree with an external object to be radiated is improved, the heat is quickly radiated, and the problem of thermal resistance caused by poor contact is reduced.

5. According to the radiating fin provided by the invention, the extending part is further formed on the radiating fin, so that the wind area is further increased, and the radiating efficiency is improved.

6. According to the radiating fin provided by the invention, the edge of the supporting rib, which is far away from one side of the base plate, and the base plate form an included angle A, so that the radiating fin can form a ring after being combined, and the application scenes and the combination forms of the radiating fin are increased.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic cross-sectional view of a pressure cooker of the present invention;

FIG. 2 is a top view of the pressure cooker of the present invention;

FIG. 3 is a perspective view of the pressure cooker of the present invention;

FIG. 4 is a schematic view of an air-cooled structure according to the present invention;

FIG. 5 is a top view of an air-cooled structure according to the present invention;

FIG. 6 is a front view of an air-cooled structure according to the present invention;

FIG. 7 is a left side view of the air-cooled structure of the present invention;

FIG. 8 is a schematic view of a heat sink of the present invention;

FIG. 9 is a first view illustrating a plurality of heat sink units assembled together;

FIG. 10 is a schematic view of a plurality of heat sink units in combination;

FIG. 11 is a schematic view of a first side of the heat sink unit;

FIG. 12 is a schematic view of a second side of the heat sink unit;

FIG. 13 is a side view of the heat sink monomer;

fig. 14 is a schematic view of a deformed state of the heat sink according to the present invention.

Description of reference numerals:

10-pot body, 20-pot cover and 21-air outlet;

30-air cooling structure, 31-fan, 32-air channel, 321-air channel guide part, 322-air channel dispersion part, 323-air inlet, 33-heat sink component, 331-air inlet end, 332-air outlet end and 34-articulated shaft;

40-heat radiating fins, 41-support ribs, 42-first assembling parts, 43-second assembling parts, 44-extending parts, 45-bottom plates and 46-assembling steps.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example one

Referring to fig. 1 to 14, the air cooling structure provided in this embodiment includes:

an air duct 32;

a fan 31 disposed at a first end of the air duct 32; and

a heat sink assembly 33 disposed at a second end of the air duct 32 and communicated with the fan 31 via the air duct 32, wherein the heat sink assembly 33 is adapted to contact a structure to be cooled;

the first end and the second end of the air duct 32 are further respectively provided with an air inlet 323 and an air outlet 21, wherein the air inlet 323 is disposed at a position of the lower end of the air outlet 21 along a gravity direction.

In the air cooling structure provided by this embodiment, the heat sink assembly 33 is in contact with a structure to be cooled, and the fan 31 is communicated with the heat sink assembly 33 through the air duct 32, so that the fan 31 blows air from the air inlet 323 to the air outlet 21, and the air passes through the heat sink assembly 33, thereby cooling the heat sink assembly 33; the air inlet 323 is arranged at the lower end of the air outlet 21 in the gravity direction, so that cold air enters from the lower end and hot air blows from the upper end, the cold air and hot air separation device meets the law that the cold air is in the lower part and the hot air is in the upper part in the nature, the purpose of cold and hot air separation is achieved, the temperature of the sucked air is always at a lower temperature in the using process, and the cooling efficiency is improved.

Preferably, the air cooling structure that this embodiment provided can be used on the pressure cooker to improve the radiating efficiency of pressure cooker, accelerate the pressure release. In the application environment of the pressure cooker, the side surface of the heat sink assembly 33 is tightly attached to the upper cover substrate of the pressure cooker, that is, the support ribs 41 of the heat sink are attached to the inner cover 22 of the pressure cooker, and the heat inside the pressure cooker is guided to the heat sink assembly 33 through the inner cover 22 by means of brazing or coating heat-conducting silicone grease, so that the heat dissipation efficiency of the pressure cooker is improved.

Specifically, an air inlet end 331 or an air outlet end 332 is formed at the circumferential edge of the heat sink assembly 33, an air outlet end 332 or an air inlet end 331 is formed in the middle area of the heat sink assembly 33, and the air inlet end 331 is communicated with the air outlet end 332 through a heat dissipation channel.

Preferably, in this embodiment, the heat sink assembly 33 is formed with an air inlet end 331 at the peripheral edge and an air outlet end 332 at the central region.

In the air cooling structure provided by this embodiment, the air inlet end 331 is formed at the circumferential edge of the heat sink assembly 33, and the air outlet end 332 is formed at the middle region of the heat sink assembly 33, so that the air inlet region is more dispersed, the air inlet amount is increased, and the heat dissipation effect is increased.

Preferably, the heat sink assembly 33 is formed with the air inlet end 331 or the air outlet end 332 at the circumferential edge, and the air outlet end 332 or the air inlet end 331 is formed at the middle region, so that compared with a mode of air outlet at one side and the other side, when the air passing area of the heat sink is the same, the air guide path of the heat sink assembly 33 can be shortened, the heat dissipation effect is improved, and the over-high temperature at the tail end caused by the overlong air guide path is avoided, thereby improving the heat dissipation efficiency.

Specifically, the fin assembly 33 is constructed in a ring-shaped or C-shaped structure.

Preferably, the lengths of the air inlet end 331 or the air outlet end 332 formed at the circumferential edge of the heat sink assembly 33 to the air outlet end 332 or the air inlet end 331 at the middle region are the same, so as to ensure that the lengths of the heat dissipation channels are the same, and at this time, the air outlet end 332 or the air inlet end 331 at the middle region is formed by penetrating the annular heat sink assembly 33 along the central axis.

The air cooling structure that this embodiment provided, through adopting annular structure or C shape structure, will air inlet end 331 or air outlet end 332 set up in fin subassembly 33 circumference border position to air outlet end 332 or air inlet end 331 set up in fin subassembly 33 middle part region, air inlet end 331 with be linked together through radiating channel between the air outlet end 332, make each radiating channel length homogeneous phase on fin subassembly 33 guarantees even radiating effect, avoids local overheat, improves the radiating effect.

Preferably, the heat sink assembly 33 is formed in a ring shape or "C" shape, and a space is left at the center, which is suitable for allowing external components to pass through, for example, when the heat sink assembly 33 is installed in cooperation with a pressure cooker, the center is suitable for allowing pressure control components of the pressure cooker to pass through, such as a pressure valve, an exhaust valve, a float valve, a sensor, etc.

Specifically, the air duct 32 includes: air duct dispersing part 322, heat sink assembly 33 is disposed in air duct dispersing part 322, and the shape of air duct dispersing part 322 matches with the shape of heat sink assembly 33.

The air cooling structure provided by the embodiment is characterized in that the air cooling structure is formed by arranging the heat radiating fin assembly 33 in the air duct dispersing part 322, and the air duct dispersing part 322 is matched with the heat radiating fin assembly 33 in shape, so that air is dispersed to the circumferential direction of the heat radiating fin assembly 33, the circumferential direction of the heat radiating fin assembly 33 is ensured to be air inlet or air outlet, the air dispersing area is larger, air inlet or air outlet is facilitated, and the air inlet or air outlet effect is ensured.

Specifically, an air passage is provided between an outer edge of the fin assembly 33 and an inner edge of the air duct dispersing portion 322.

Specifically, the air duct 32 further includes: an air duct guide 321, the air duct guide 321 being adapted to communicate the fan 31 with the air duct dispersing portion 322.

The air cooling structure provided by this embodiment is provided with the air duct guiding portion 321, and communicates the fan 31 with the air duct dispersing portion 322, so that air driven by the fan 31 is blown to the air duct dispersing portion 322, and a guiding effect is achieved.

Specifically, the air duct guiding portion 321 is arc-shaped, so that the air flow directions at the two ends of the air duct guiding portion 321 are arranged at an angle.

The air cooling structure that this embodiment provided, through inciting somebody to action wind channel guide portion 321 is the arc setting, makes the air current direction at wind channel guide portion 321's both ends is the angle setting to play the effect that changes the wind direction, improve the selectivity of the direction that sets up of air intake 323 and air outlet 21, the rational utilization space more is suitable for and treats heat radiation structure and cooperate.

Specifically, the heat sink assembly 33 is formed by splicing at least two heat sinks 40, and the heat dissipation channel is formed between the two heat sinks.

Specifically, the heat sink 40 includes:

a bottom plate 45;

the supporting ribs 41 are formed by extending the surface of the bottom plate 45 in a direction away from the bottom plate 45; and

the first assembly member 42 and the second assembly member 43 are connected, and the first assembly member 42 or the second assembly member 43 is suitable for being connected with the second assembly member 43 or the first assembly member 42 on the other adjacent cooling fin in a clamping mode.

Specifically, an included angle a is formed between the edge of the support rib 41 on the side away from the bottom plate 45 and the bottom plate 45, where a is greater than 0 °.

Specifically, an included angle a is formed between an edge of one side of the support rib 41, which is far away from the bottom plate 45, and the bottom plate 45, where a is 3 °; the heat sink assembly 33 is formed by splicing 120 heat sinks 40 in sequence to form a ring.

Example two

As shown in fig. 1 to 3, the present embodiment provides a pressure cooker, including:

a pot body 10;

the pot cover 20 is movably connected with the pot body 10 through a hinge shaft 34; and

the air cooling structure as described above.

The pressure cooker that this embodiment provided, through adopting the forced air cooling structure, solve the pressure cooker rapid cooling pressure release problem of uncapping, promote user experience, can shorten the time of uncapping simultaneously through rapid pressure release, reduce food actual pressure, the elongated condition of culinary art time, shorten the food actual culinary art time and set for the gap of culinary art time, further guarantee the uniformity of culinary art taste, avoid influencing the taste.

Preferably, the air cooling structure is arranged on the pressure cooker, so that pressure can be quickly released, and the situation that a user is likely to release pressure by himself to cause environmental pollution and even scald is reduced.

Specifically, the pressure cooker further comprises:

an inner lid 22, the fin assembly 33 being disposed inside the pot lid 20 and being disposed in contact with the inner lid 22.

Preferably, the heat sink assembly 33 is disposed in contact with the inner cover 22, and the heat inside the pressure cooker is guided to the heat sink assembly 33 through the inner cover 22 by soldering or coating heat conductive silicone grease, so as to improve the heat dissipation efficiency of the pressure cooker.

Specifically, the air inlet 323 is arranged at a side position of the pot body 10; the air outlet 21 is disposed above the pot cover 20.

In the pressure cooker provided by the embodiment, the air inlet 323 is arranged at the side position of the cooker body 10; the air outlet 21 is arranged above the cooker cover 20, so that a cold air inlet is positioned on the side face of the cooker body, and a hot air outlet is positioned on the upper cover, so that hot air is blown upwards, the cold air and hot air separating device meets the law that cold air is in the lower part and hot air is in the upper part in the nature, the aim of separating cold air from hot air is fulfilled, the temperature of sucked air is always at a lower temperature in the using process, and the cooling efficiency is improved.

In this embodiment, the pot body 10 with the pot cover 20 is through articulated shaft 34 swing joint, and is preferred, the quantity of articulated shaft 34 is two, two articulated shaft 34 set up respectively in the outside of wind channel guide portion 321, thereby avoid when articulated shaft 34 adopts a major axis, it is right when setting up the position of wind channel guide portion 321 causes the interference, convenient structure the arrangement of wind channel guide portion 321 need not to occupy the space of wind channel guide portion 321, improves the rate of utilization.

Additionally, the sensors and the electromagnetic valves on the cooker cover 20 are wired on two sides of the air duct guiding portion 321.

Compare with the pressure cooker that adopts the water-cooling mode to carry out the pressure release, this scheme does not need the user to add water and cools off, adds water from reducing the user, or additional operations such as the water tank sewage drains or washs, further promotes user experience.

Additionally, still be provided with protection against insects structure on the air outlet 21, through add one air door on the air outlet 21, memory metal is adopted in the air door lift, under certain temperature, if more than 60 ℃, the spring sclerosis becomes strong, and the spring force rises the air door, and below 60 ℃, memory spring becomes soft, and the air door is closed to prevent that the reptile from getting into, make the air door open automatically after the temperature risees.

Preferably, the heat sink assembly 33 is formed by stamping and the like to form an air cooling channel for lateral ventilation and heat dissipation, the structure of the heat sink assembly 33 has multiple modes, wherein, the heat sink assembly 33 and the corrugated heat sink fins are preferably combined by single heat sinks, and the single heat sinks are elastically assembled from head to tail to form a circle or a certain angle of annular heat sink assembly 33, so as to increase the heat dissipation area with air cooling and improve the heat dissipation capacity.

Because the radiating fins are generally made of thin metal materials such as aluminum sheets through processes of stamping forming and the like, the utilization rate of the materials can be improved by adopting the single radiating fins, the forming manufacturability is met, and then the single radiating fins are combined to form the radiating fin assembly 33, the cost is saved, and the waste is avoided.

EXAMPLE III

As shown in fig. 8 to 13, the heat sink provided in this embodiment includes:

a bottom plate 45;

the supporting ribs 41 are formed by extending the surface of the bottom plate 45 in a direction away from the bottom plate 45;

The first assembly part 42 and the second assembly part 43 are arranged on the radiating fins, and the adjacent two radiating fins can be assembled through the first assembly part 42 and the second assembly part 43, so that the combination of the radiating fins is realized, the radiating fins are conveniently manufactured in a batch production mode and assembled, the structural forms of the plurality of radiating fins are completely the same, a proper assembly part does not need to be found in the assembly, the assembly efficiency is accelerated, and the operation is simplified.

The fin that this embodiment provided can increase heat radiating area, reduces forced air cooling resistance, further increases the heat dissipation capacity, just the fin can adopt end to end's mode to carry out the combination assembly, conveniently forms the radiating passageway of forced air cooling, reduces the processing degree of difficulty of integral radiator.

Preferably, the heat sink may be stamped from a sheet material.

The material of the radiating fin is preferably aluminum material, and other metals such as iron and copper, heat conducting plastics and the like can be selected.

Preferably, the base plate 45 is configured as a bottom surface of the heat sink, and the support ribs 41 are provided on the base plate 45 such that the support ribs 41 extend from the surface of the base plate 45 in a direction away from the base plate 45, and when the number of the support ribs 41 is two, the heat sink is configured in a substantially U-shaped configuration.

Specifically, the bottom plate 45 is formed with at least two support ribs 41 extending toward the same side.

The cooling fin provided by the embodiment is formed by extending the bottom plate 45 towards the same side to form at least two supporting ribs 41, so that the two adjacent cooling fins can be separated from the bottom plate 45 through the supporting ribs 41 during assembly, so that the two adjacent cooling fins can form a cooling channel between the bottom plate 45 after the assembly is completed, ventilation is facilitated, a hollow-out state is integrally formed, and the contact area of cold air and the cooling fins is increased.

Specifically, the two support ribs 41 are respectively disposed at two side edge positions of the bottom plate 45 in the width direction.

The cooling fin provided by the embodiment is characterized in that the two support ribs 41 are respectively arranged at the edge positions of the two sides of the bottom plate 45 in the width direction, so that the cooling fin is multiple in assembly, the support ribs 41 are connected to form a planar state, and are convenient to contact with an external object to be cooled, and the use mode of the cooling fin is increased without only adopting the contact between the bottom plate 45 and the external object to be cooled.

Specifically, the support rib 41 is disposed perpendicular to the bottom plate 45. The vertical arrangement mode is adopted, so that the spacing distance between the adjacent radiating fins is convenient to increase, the radiating effect is ensured, and compared with the inclined arrangement mode, the same spacing distance can be achieved by adopting the supporting ribs 41 with the shortest length; and reduce the assembly degree of difficulty, conveniently connect.

Preferably, the height of the support rib 41 of the heat sink ranges from 2.5mm to 6mm, and the heat dissipation efficiency and the difficulty of metal punch forming are considered, so that the phenomenon that when the size is too small, a channel through which cooling air flows is too small, the air resistance is reduced, and meanwhile, the waste of cold air caused by too large size is avoided, and the heat dissipation efficiency is ensured; and the height of the supporting rib 41 is too small, so that the stamping and flanging difficulty is increased, and the production is not favorable.

Specifically, the bottom plate 45 is further formed with a fitting step 46, and the fitting step 46 is adapted to be in abutting connection with the support rib 41 on another adjacent heat sink.

Preferably, the fitting step 46 is provided on the bottom plate 45 on the opposite side of the extending direction of the support rib 41.

Because the fin adopts the punching press form to make, after fin metal material stamping forming, can produce the scheduling problem that kick-backs, does not set up during the assembly step 46, adjacent two the fin will have the dislocation condition after the assembly combination, and is difficult for becoming flexible to cause the abnormal sound under the blowing of wind, and make the brace rod 41 of adjacent setting and external object laminating of waiting to dispel the heat not tight, lead to the radiating effect relatively poor.

The fin that this embodiment provided, through bottom plate 45 still sets up assembly step 46, and makes assembly step 46 be suitable for with adjacent another that sets up on the fin brace rod 41 butt is connected to guarantee firm in connection between the adjacent fin, and can reduce the resilience phenomenon behind the metal material stamping forming, make the brace rod 41 of adjacent setting be located the coplanar, improve with external the object laminating inseparable degree of waiting to dispel the heat, follow in quick heat dissipation, reduce the thermal resistance problem that contact failure arouses.

In addition, when the two adjacent cooling fins are assembled, the assembling steps 46 can be quickly positioned by matching the assembling steps 46 with the supporting ribs 41, so that the alignment time is shortened, and the assembling efficiency is improved.

Specifically, the first fitting member 42 is disposed at an edge position of the support rib 41 on a side close to the bottom plate 45, and is connected to the fitting step 46; the second fitting part 43 is disposed at an edge position of the support rib 41 on a side away from the bottom plate 45.

Preferably, one of the first assembly member 42 and the second assembly member 43 is in the form of a snap, and the other is in the form of a slot, so that the first assembly member 42 and the second assembly member 43 are assembled and connected by the cooperation of the slot and the snap, and further, the two adjacent heat sinks are connected.

The first assembly part 42 and the second assembly part 43 are respectively arranged on two sides of the support rib 41 close to and far away from the bottom plate 45, so that the adjacent cooling fins can be conveniently matched in an inserted manner, and the support rib 41 and the assembly step 46 can be ensured to be tightly attached under the condition that the first assembly part 42 and the second assembly part 43 are matched with the assembly step 46.

Preferably, a plurality of sets of the first assembly member 42 and the second assembly member 43 are provided on the heat sink, and preferably, two sets or four sets are provided.

Specifically, the heat sink further has an extension portion 44, and the extension portion 44 is formed by extending at least a partial region of the support rib 41.

In the heat sink provided in this embodiment, the extension portion 44 is further formed on the heat sink, so that the wind receiving area is further increased, and the heat dissipation efficiency is improved.

In particular, the extension 44 is arranged parallel to the base plate 45.

By extending the extension portion 44 from at least a partial region of the support rib 41 and arranging it in parallel with the base plate 45, interference of the extension portion 44 with the adjacent heat sink is avoided.

Specifically, at least one extension portion 44 extends from each of the two opposite support ribs 41 on the heat sink, and the extension portions 44 on the two opposite support ribs 41 extend in opposite directions.

Preferably, the extending portions 44 of the two opposite support ribs 41 extend in opposite directions and abut against each other.

Specifically, the included angle a is 3 °.

The height of the support rib 41 along the length direction of the bottom plate 45 is changed, so that the support rib 41 forms an inclined structure relative to the bottom plate 45, thereby forming an included angle.

According to the heat sink provided by the embodiment, the edge of the support rib 41 far away from the bottom plate 45 and the bottom plate 45 form an included angle a, so that the heat sink is combined to form a ring, and application scenes and combination forms of the heat sink are increased.

Preferably, in this embodiment, when the included angle a is 3 °, the annular heat sink assembly is formed by terminating 120 single heat sinks.

Design parameters such as the included angle A of the radiating fins and the height of the supporting ribs 41 need to be considered comprehensively, if the included angle is too small, the clearance is small after the radiating fins are assembled, and the wind resistance is large during ventilation and cooling; if the angle is large and the height of the support rib 41 is high, the surface area for heat radiation is small, and the heat radiation efficiency is reduced. Therefore, the fan parameters, the wind speed, the wind pressure, the heat dissipation temperature and the like need to be considered integrally, and in the embodiment, through analysis of simulation software, when the included angle a is 3 °, the heat dissipation effect is the best.

Example four

Referring to fig. 1 to 7, the air cooling structure provided in this embodiment includes:

an air duct 32;

a fan 31 disposed at one end of the air duct 32; and

a heat sink assembly 33 disposed at the other end of the air duct 32;

the heat sink assembly 33 communicates with the fan 31 via the air duct 32;

the fin assembly 33 is formed by assembling the fins as described above.

Specifically, the heat sink assembly 33 is formed by splicing at least two heat sinks, and a heat dissipation channel is formed between the two heat sinks.

Preferably, the air cooling structure that this embodiment provided can be used on the pressure cooker to improve the radiating efficiency of pressure cooker, accelerate the pressure release. In the application environment of the pressure cooker, the side surface of the heat sink assembly 33 is tightly attached to the upper cover substrate of the pressure cooker, that is, the support ribs 41 of the heat sink are attached to the upper cover substrate of the pressure cooker, and the heat inside the pressure cooker is guided to the heat sink assembly 33 through the inner cover 22 by means of brazing or coating heat-conducting silicone grease, so that the heat dissipation efficiency of the pressure cooker is improved.

Referring to fig. 14, which is a modified form of the fin assembly provided in this embodiment, the fin assembly may be further configured as an annular structure extending in a wave form, and formed in an integral molding manner.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A heat sink, comprising:

a base plate (45);

the supporting ribs (41) are formed by extending the surface of the bottom plate (45) in the direction away from the bottom plate (45);

the first assembly part (42) and the second assembly part (43), and the first assembly part (42) or the second assembly part (43) is suitable for being in clamping connection with the second assembly part (43) or the first assembly part (42) on the other adjacent cooling fin.

2. A heat sink as claimed in claim 1, wherein the base plate (45) is formed with at least two of the support ribs (41) extending towards the same side.

3. The heat sink as claimed in claim 2, wherein two of the support ribs (41) are provided at positions on both side edges of the base plate (45) in the width direction, respectively.

4. A heat sink as claimed in claim 3, wherein the support ribs (41) are arranged perpendicular to the base plate (45).

5. A heat sink as claimed in claim 4, wherein the base plate (45) is further formed with a fitting step (46), the fitting step (46) being adapted to be in abutting connection with the support rib (41) on another one of the heat sinks disposed adjacently.

6. A heat sink as claimed in claim 5, wherein the first fitting member (42) is provided at an edge position of the support rib (41) on a side close to the base plate (45) and connected to the fitting step (46); the second assembly part (43) is arranged at the edge position of one side of the support rib (41) far away from the bottom plate (45).

7. A fin according to any one of claims 2 to 6, further formed with extensions (44), said extensions (44) extending from at least a portion of the area of said support ribs (41).

8. A fin as claimed in claim 7, characterized in that said extensions (44) are arranged parallel to said base plate (45).

9. The heat sink as recited in claim 8, wherein at least one extension portion (44) extends from each of two opposite support ribs (41) of the heat sink, and the extension portions (44) of the two opposite support ribs (41) extend in opposite directions.

10. A fin as claimed in any one of claims 1 to 6, characterised in that the edge of the support rib (41) on the side remote from the base plate (45) is arranged at an angle A to the base plate (45), where A > 0 °.

11. A heat sink as claimed in claim 10, wherein said included angle a is 3 °.

12. An air-cooled structure, comprising:

an air duct (32);

the fan (31) is arranged at one end of the air duct (32); and

the heat sink assembly (33) is arranged at the other end of the air duct (32);

the heat sink assembly (33) is in communication with the fan (31) via the air duct (32);

the fin assembly (33) is assembled from fins according to any of claims 1 to 11.

13. The air-cooling structure according to claim 12, wherein the fin assembly (33) is formed by splicing at least two of the fins with a heat dissipation passage formed therebetween.